CVE-2008-6558: Untrusted search path vulnerability in (1) hvdisp and (2) rcvm in ReliantHA 1.1.4 in SCO UnixWare 7.1.4 allows

This month

HIGH 7.2MITIGATEDOWNGRADE

CVE-2008-6558 is a high-severity flaw (CVSS 7.2) affecting unixware, reliantha. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Untrusted search path vulnerability in (1) hvdisp and (2) rcvm in ReliantHA 1.1.4 in SCO UnixWare 7.1.4 allows local users to gain root privileges by modifying the RELIANT_PATH environment variable to point to a malicious bin/hvenv program.

Why this priority

High severity
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.2 (High)
EPSS exploit chance	0.9% (top 41%)
CISA exploited list	No
Weakness	CWE-20
Published	2009-03-30
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: sco · unixware

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2009-03-30 20:30 UTCPublished CVE record published
2026-06-16 23:02 UTCUpdated Record last modified

sco unixware MITIGATE

Affected: 7.1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 7.1.4

Check your OS release

cat /etc/os-release; uname -r

Debian / Ubuntu

sudo apt update && sudo apt full-upgrade

RHEL / Amazon Linux / Fedora

sudo dnf upgrade --refresh

Windows

Install the latest cumulative update from Windows Update

If no patch exists yet

OS downgrades are not safe. Apply the vendor mitigation from the advisory and restrict exposure.

unixware reliantha DOWNGRADE

Affected: 1.1.4

Fixed in: no fixed release known

Safe to downgrade to: a release before 1.1.4

1. Check installed version

apt-cache policy reliantha || rpm -q reliantha || reliantha --version

2. No fixed release: DOWNGRADE to a release before 1.1.4 (Debian / Ubuntu)

apt-cache madison reliantha sudo apt install reliantha=<VERSION_BEFORE_1.1.4> sudo apt-mark hold reliantha

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list reliantha sudo dnf downgrade reliantha-<VERSION_BEFORE_1.1.4> sudo dnf versionlock add reliantha

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: SCO UnixWare Reliant HA 1.1.4 - Local Privilege Escalation

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2008-6558?

unixware: mitigate or apply the listed mitigation; reliantha: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2008-6558 being exploited?

CVE-2008-6558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2008-6558 affect?

CVE-2008-6558 affects unixware, reliantha. Severity is high (CVSS 7.2). Untrusted search path vulnerability in (1) hvdisp and (2) rcvm in ReliantHA 1.1.4 in SCO UnixWare 7.1.4 allows local users to gain root privileges by modifying the RELIANT_PATH environment variable to point to a malicious bin/hvenv program.

How urgent is CVE-2008-6558?

Priority 45/100. High severity; Public exploit reference

Related CVEs

CVE-2009-1552 HIGH 7.8 MITIGATE Unspecified vulnerability in the IGMP driver in SCO Unixware Release 7.1.4 Maintenance Pack 4 allows attackers
CVE-2008-6559 HIGH 7.2 DOWNGRADE MITIGATE Merge mcd in ReliantHA 1.1.4 in SCO UnixWare 7.1.4 allows local users to gain root privileges via a crafted -d

References

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